[  519.973599] netdevsim netdevsim687 eni687np1: renamed from eth1
[  520.069865] netdevsim netdevsim458 eni458np1: renamed from eth0
[  520.341157] Could not find device with ifindex 2000 in netnsfd 11
[  520.341407] Could not find netns with fd: 2000
[  520.341518] Cannot link a netdevsim to itself
[  520.341636] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).